Abstract
Hormogonia are the infective agents in many cyanobacterium-plant symbioses. Pilus-like appendages are expressed on the hormogonium surface, and mutations in pil-like genes altered surface piliation and reduced symbiotic competency. This is the first molecular evidence that pilus biogenesis in a filamentous cyanobacterium requires a type IV pilus system.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Conserved Sequence
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Fimbriae, Bacterial / genetics*
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Fimbriae, Bacterial / physiology
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Fimbriae, Bacterial / ultrastructure
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Genes, Bacterial
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Microscopy, Electron, Transmission
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Molecular Sequence Data
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Mutation
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Nostoc / genetics*
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Nostoc / growth & development*
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Nostoc / physiology
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Plant Physiological Phenomena
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Plants / microbiology*
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Sequence Alignment
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Symbiosis / genetics*